Hi @jaypeecee,
I currently own a Ada 90f tank so I went for the 50gallon per day Ro unit from osmotics and look to fill up one 25L water butt for each water change (takes about 45 mins to do through my bath tap at around 50% efficiency). You can find the unit here https://www.osmotics.co.uk/products/3-Stage-50-Gallon-Per-Day-Reverse-Osmosis-System.html I would recommend getting in touch with them as there's a few connecting parts you need plus also a tds meter is useful. Hope that helps
I currently own a Ada 90f tank so I went for the 50gallon per day Ro unit from osmotics and look to fill up one 25L water butt for each water change (takes about 45 mins to do through my bath tap at around 50% efficiency). You can find the unit here https://www.osmotics.co.uk/products/3-Stage-50-Gallon-Per-Day-Reverse-Osmosis-System.html I would recommend getting in touch with them as there's a few connecting parts you need plus also a tds meter is useful. Hope that helps